Electrical Specifications
Rev 6 Mar.13
Proprietary and Confidential - Contents subject to change
31
Power supply
The host provides power to the MC7710 through multiple power and ground pins
as summarized in
The host must provide safe and continuous power at all times; the module does
not have an independent power supply, or protection circuits to guard against
electrical issues.
USB interface
The USB interface is the path for communication between the host and module.
The interface complies with the
[11] Universal Serial Bus Specification, Rev 2.0
,
and the host device must be designed to the same standard. (When designing
the host device, careful PCB layout practices must be followed.)
USB interface features include:
•
Data rate: Full-speed (12 Mbps) / High-speed (480 Mbps)
•
Module enumeration:
·
Windows: Modem or COM ports, using host Windows drivers
·
Linux: / dev / ttyUSB
n
devices for Linux systems with the Sierra Wireless
driver installed
•
USB-compliant transceivers
•
Selective suspend mode
•
Resumption initiated by host or module
USB high / full speed throughput performance
This device has been designed to achieve optimal performance and maximum
throughput using USB high speed mode. Although the device may operate with a
full speed host, throughput performance will be on an “as is” basis and needs to
Table 4-2: Power and ground specifications
Name
Pins
Specification
Min
Typ
Max
Units
VCC
2, 24, 39, 41, 52
Voltage range
See
.
Ripple voltage
-
-
100
mV
pp
GND
4, 9, 15, 18, 21, 26,
27, 29, 34, 35, 37,
40, 43, 50
-
-
0
-
V
Table 4-3: USB interface
Name
Pin
Description
USB_D-
36
USB data negative
USB_D+
38
USB data positive
